usually hops, type of twining vine whose cones are used in brewing, etc., mid-15c., from Middle Dutch hoppe, from Proto-Germanic *hup-nan- (cognates: Old Saxon -hoppo, German Hopfen), of unknown origin.

"opium," 1887, from Cantonese nga-pin (pronounced HAH-peen) "opium," a Chinese folk etymology of the English word opium, literally "crow peelings." Re-folk-etymologized back into English by association with hop (n.1).

"a small jump," c.1500, from hop (v.). Slang sense of "informal dancing party" is from 1731 (defined by Johnson as "a place where meaner people dance"). Meaning "short flight on an aircraft" is from 1909.